diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index a01ec2d..8ef892f
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ gem 'haml', '~>4.0.5'
 #gem 'sass'
 gem 'libxml-ruby'
 gem 'pg', '0.17.1'
-gem 'sprockets', '1.0.2'
+gem 'sprockets', '4.0.0'
 # gem 'hpricot'
 gem 'mixology'
 gem 'yui-compressor', '0.11.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index ccb302f..a221788 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,6 +39,7 @@ GEM
     cocaine (0.6.0)
       terrapin (= 0.6.0)
     columnize (0.9.0)
+    concurrent-ruby (1.1.5)
     delayed_job (4.1.5)
       activesupport (>= 3.0, < 5.3)
     diff-lcs (1.3)
@@ -143,7 +144,9 @@ GEM
     sass (3.3.4)
     spreadsheet (1.2.3)
       ruby-ole (>= 1.0)
-    sprockets (1.0.2)
+    sprockets (4.0.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
     terrapin (0.6.0)
       climate_control (>= 0.0.3, < 1.0)
     thor (0.14.6)
@@ -183,7 +186,7 @@ DEPENDENCIES
   ruby-recaptcha
   rubyzip (~> 0.9.9)
   sass (= 3.3.4)
-  sprockets (= 1.0.2)
+  sprockets (= 4.0.0)
   uuidtools
   will_paginate
   yui-compressor (= 0.11.0)